The invention provides an agricultural pesticide spraying and film covering machine. The agricultural pesticide spraying and film covering machine comprises an I-shaped support and adjusting supportssymmetrically arranged on the left side and the right side of the I-shaped support, wherein the I-shaped support comprises a central supporting rod and auxiliary supporting rods, each adjusting support comprises an adjusting supporting rod and a sliding rod, a bulldozer plough, a pesticide spraying nozzle, a pesticide spraying pump and a pesticide box are sequentially arranged on the central supporting rod from front to back, wheel frames are symmetrically arranged at the bottoms of the front end and the back end of each adjusting supporting rod, and a ditching frame, an auxiliary film pressing frame and a soil burying frame are successively arranged on the bottom of each adjusting supporting rod from front to back. The agricultural pesticide spraying and film covering machine has the beneficial effects that pesticide spraying, ditching, film covering, film pressing and soil burying operations are integrated, the defects that time and labor are wasted in film covering in the prior artare effectively overcome, in addition, the whole structure is simple, the width is conveniently adjusted, and the machine can operate in ridges with different sizes, and has wide applicability.